Astronomy Cast Ep. 238: Solar Activity

The Solar Cycle

The Sun looks like a harmless burning ball of fire in the sky: warm, life-giving and forever unchanging. But we know better, don’t we. It’s really a massive ball of churning hydrogen plasma, encased in twisting magnetic field lines, speckled with sunspots, and constantly disgorging vast plumes of radiation and charged particles. The Sun is very active indeed.

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“Solar Activity” shownotes on the Astronomy Cast website.

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